[masklinn]

The Plough is much simpler to handle imo, because you're only directly dealing with one roundabout at a time, the "meta-roundabout" is more incidental rather than the mess of Swindon.

[radiorental]

Not quite strictly true. You can traverse the inner roundabout without having go full circle around each of the satellites.

[masklinn]

True but these functionally behave like "roundabout bypasses": if you want to take a right at the roundabout, for the biggest and most engorged roundabouts around here it's common to have a lane letting you turn without entering the roundabout.